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PowerApps Portal - Digital Signature available?

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Posted on by MittalPatel

Hello,

I've been researching on adding a digital signature on the portal entity form. Can I please get any suggestions on what are the options available?

I already checked - Capture signature in PowerApps Portal - Dancing with CRM
I tried to add a pen control to the field and added that field on the entity form, but it doesn't look like it reflects on the portal webpage when I've added my entity form.
Any possibility to use the powerapps connectors i.e. docusign, adobe, etc. to be integrated on the Portal form?

Thank you.

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EmanuelG 8 on at

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Re: PowerApps Portal - Digital Signature available?

Thank you for your assistance @OOlashyn turns out, I was calling the JS file from a different web template.

It's working perfect now, I just needed to increase the max size for the column to 30000 lines otherwise some signatures were throwing errors, I assume it was because the base64 size for them was bigger since they have too many strokes on the signature image.
OOlashyn 3,496 Most Valuable Professional on at

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Re: PowerApps Portal - Digital Signature available?

Hi @EmanuelG ,

Did you update my code with the name of your field? Also can you check that js code for library and for custom code is present on the page?
EmanuelG 8 on at

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Re: PowerApps Portal - Digital Signature available?

I'm having similar issues, I was able to show the canvas once, but after I submitted the form successfully it never showed up again.

I'm using a default template and I'm referencing the .js from the "Page Copy" section and the javascript code in the advanced area, as you mentioned in your article.

Also I don't have console errors, only warnings but none related to this js

Do you have any suggestions?
OOlashyn 3,496 Most Valuable Professional on at

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Re: PowerApps Portal - Digital Signature available?

Hi @MittalPatel,

I am the author of the article you are referencing (this one). Does your signature field is a multiline text field with a length of 15000 characters? Also, can you tell me where did you add a Signature Pad library that I was referring to: if you are using a prebuilt template you should add it to the Page Copy and if the custom just to the template itself? Also if you followed my article step by step do you have any errors in your console log?
Fubar 8,021 Super User 2025 Season 1 on at

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Re: PowerApps Portal - Digital Signature available?

As you appear to be missing the item in the metadata dropdown, you may have to update the Solution Files for your Portal (and also Possibly the Portal as well) see the prerequisites on the previous link (has the required versions etc). Also note, this is still a preview feature so Microsoft does not recommend it for Production use at this stage.

Where customers have asked for signatures from the portal, we have usually been able to avoid an actual signature based on:
the user is logged in (authenticated), and
we have a tickbox saying "I agree", and
behind the Entity Form etc we have metadata set to save the Portal user into a field on the record and also the date-time. (and can also add another one for Submitted from Portal)
So we have a record that is timestamped, and we capture the user/contact making the declaration, and this record is created by System (so not a normal user just creating the record).
MittalPatel 20 on at

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Re: PowerApps Portal - Digital Signature available?

@Fubar - Thank you for your response.

Please see above reply for what I'm trying to achieve. There is no document we have to send, but just online form and signature to take consent.

As you suggested, I was trying to add metadata. But I'm not sure which control type I should select so that the multiline textbox will be displayed with a pen control on the portal form to capture the signature.
MittalPatel 20 on at

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Re: PowerApps Portal - Digital Signature available?

This is what exactly I'm trying to achieve. Add signature capturing text box on the Entity form.

Here is the form where I added a field "Signature" with a code component in field properties.

And, below is on the portal, no signature field is displayed. It is blank.
Fubar 8,021 Super User 2025 Season 1 on at

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Re: PowerApps Portal - Digital Signature available?

Have you setup the required Metadata and entity permissions etc for PCF controls to work on the portal (they don't just work with out some additional setup). https://docs.microsoft.com/en-us/powerapps/maker/portals/component-framework

You could do something where, they submit the form and then you send them a Document etc to sign - I think Docusign has an Solution file that allows you to workflow and merge fields etc into the Document that gets sent out for signatures (and also could probably do something with PowerAutomate Flow once the data is in DataVerse)
https://www.docusign.com/sites/default/files/FactSheet_DocuSign__Dynamics_365_Final.pdf
ragavanrajan 7,036 Most Valuable Professional on at

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Re: PowerApps Portal - Digital Signature available?

Hi @MittalPatel ,

First of all, not sure what do you mean by it doesn't look like it reflects on the portal webpage? Are you getting any errors or is it blank? Please share the screenshot

Docusign possibility is available but no straightway to implement it.

https://powerusers.microsoft.com/t5/Power-Apps-Portals/PowerApps-Portal-Sign-Document-Electronically-on-Document-on-the/td-p/698130

Hope it helps.

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